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Nuclear Architecture in the Medulla Oblongata of the Adult African Giant Pouched Rat (Cricetomys gambianus, Waterhouse - 1840) International Journal of Morphology
Ibe,C. S; Onyeanusi,B. I; Hambolu,J. O; Ayo,J. O.
The architecture of cranial and non-cranial nerve nuclei in the medulla oblongata of the African giant pouched rat was studied by means of light microscopy. Serial sections of the medulla oblongata, in coronal and saggital planes, were stained with the cresyl fast violet and silver stains, respectively. Sections in the saggital plane were used as a guide, while coronal sections were used to identify the nuclei in the rostrocaudal extent of the medulla oblongata. With the obex serving as the landmark, nuclei rostral and caudal to the obex were delineated. Cranial nerve nuclei whose architecture were defined were the motor nucleus of hypoglossal nerve, motor nucleus of vagus nerve, cochlear nucleus, vestibular nucleus and nucleus ambiguus, while non-cranial...
Tipo: Journal article Palavras-chave: Cranial nerve nuclei; Non-cranial nerve nuclei; Medulla oblongata; Obex.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000200012
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Anatomical study of the brain stem of the Cebus apella monkey MV&Z
Marques, Karina do Valle; Prada, Irvênia Luiza de Santis; Silva, Zenon; Liberti, Édson Aparecido.
Objective: To perform an anatomical study of the external morphology of the brain stem of the Cebus apella monkey,describing its characteristics and comparing data with those found in literature regarding other primates, other mammals and mano Material and Method: The analysis of the external morphology of the brain stem of the Cebus apella was performed in 14 specimens. Results and Conclusions: The general organization of the structures of the brain stem of the Cebus apella is similar to that of other primates, including mano The following structures are evident on the anterior aspect of the brain stem: pyramis bulbi, decussatio pyramidum, oliva, pedunculus cerebellaris medius and pedunculus cerebri, as well as the apparent origin of the cranial nerves...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brains stem; Medulla oblongata; Pons; Mesencephalon; Cranial nerves; Capuchim monkey; Cebus apella Tronco encefálico; Médula oblongata; Pons; Mesencéfalo; Nervios craneales; Mono prego; Cebus apella tronco encefálico; Bulbo; Ponte; Mesencéfalo; Nervos cramanos; Macaco prego; Cebus apella.
Ano: 2005 URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/3135
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Rapid eye movement sleep deprivation induces an increase in acetylcholinesterase activity in discrete rat brain regions BJMBR
Benedito,M.A.C.; Camarini,R..
Some upper brainstem cholinergic neurons (pedunculopontine and laterodorsal tegmental nuclei) are involved in the generation of rapid eye movement (REM) sleep and project rostrally to the thalamus and caudally to the medulla oblongata. A previous report showed that 96 h of REM sleep deprivation in rats induced an increase in the activity of brainstem acetylcholinesterase (Achase), the enzyme which inactivates acetylcholine (Ach) in the synaptic cleft. There was no change in the enzyme's activity in the whole brain and cerebrum. The components of the cholinergic synaptic endings (for example, Achase) are not uniformly distributed throughout the discrete regions of the brain. In order to detect possible regional changes we measured Achase activity in several...
Tipo: Info:eu-repo/semantics/article Palavras-chave: REM sleep deprivation; Acetylcholinesterase; Brain regions; Thalamus; Medulla oblongata; Pons.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000100012
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Acetylcholinesterase activity in the pons and medulla oblongata of rats after chronic electroconvulsive shock BJMBR
Camarini,R.; Benedito,M.A.C..
An imbalance between cholinergic and noradrenergic neurotransmission has been proposed for the etiology of affective disorders. According to this hypothesis, depression would be the result of enhanced cholinergic and reduced noradrenergic neurotransmission. Repeated electroconvulsive shock (ECS) is an effective treatment for depression; moreover, in laboratory animals it induces changes in brain noradrenergic neurotransmission similar to those obtained by chronic treatment with antidepressant drugs (down-regulation of beta-adrenergic receptors). The aim of the present study was to determine whether repeated ECS in rats changes acetylcholinesterase (Achase) activity. Achase controls the level of acetylcholine (Ach) in the synaptic cleft and its levels seem...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acetylcholinesterase; Medulla oblongata; Pons; Chronic electroconvulsive shock.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997001000012
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